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211012221222 = 232113741702517
BaseRepresentation
bin1100010010000101001…
…1101111100100100110
3202011122210201111002200
43010201103233210212
511424123112034342
6240534312115330
721150036200145
oct3044123574446
9664583644080
10211012221222
1181542996a80
1234a8b695b46
1316b8a9353ca
14a2da85375c
15575012994c
hex31214ef926

211012221222 has 96 divisors (see below), whose sum is σ = 524730364704. Its totient is φ = 60697382400.

The previous prime is 211012221191. The next prime is 211012221271. The reversal of 211012221222 is 222122210112.

It is a happy number.

211012221222 is a `hidden beast` number, since 211 + 0 + 12 + 221 + 222 = 666.

211012221222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 211012221195 and 211012221204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 50893 + ... + 651624.

It is an arithmetic number, because the mean of its divisors is an integer number (5465941299).

Almost surely, 2211012221222 is an apocalyptic number.

211012221222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 211012221222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262365182352).

211012221222 is an abundant number, since it is smaller than the sum of its proper divisors (313718143482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211012221222 is a wasteful number, since it uses less digits than its factorization.

211012221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702614 (or 702611 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 211012221222 its reverse (222122210112), we get a palindrome (433134431334).

It can be divided in two parts, 211012 and 221222, that added together give a palindrome (432234).

The spelling of 211012221222 in words is "two hundred eleven billion, twelve million, two hundred twenty-one thousand, two hundred twenty-two".